Somehow we did see this coming--Olivia Newton-John is appearing on the back nine episodes of Glee. I mean, Rachel and Finn have done "You're The One That I Want" twice now, with Rachel channeling her inner Sandy at one point... well, yeah, that was Kurt's fault, and it wasn't the best of intentions.

Unfortunately, there's no word yet on whether that's going to be the case, but what's pretty confirmed is who the Grease star will deal with: Sue.

"I'm so excited I can't see straight!" Jane Lynch told E! Online's Kristin Dos Santos. "She provided the soundtrack for my tortured adolescence. Her charitable work and commitment to making others' lives and the life of the planet better is so inspiring.

That, and they get to sing together. Yep, a duet between Olivia Newton-John's character and that devil of a woman named Sue Sylvester. Yep, Sue really sings (although we all know that). And they're singing "Let's Get Physical".

Tracksuits will be so back in fashion this year, I can tell. Well, I exaggerate.